Itaste VTR goes on and off

I've got a huge problem. Whenever I turn on my Innokin Itaste vtr, the ecig goes OFF, then by itself it lights up again only to turn off again, and it repeats the cycle over and over again until I stop it by removing the battery.

It worked perfectly for the first 2 weeks until this happened.

I tried alternating batteries, same thing.

Has anyone lived this situation or can someone help to correct this problem.